Surgical Instrument Cabinet With Cooled Drying Gas Storage
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Solution Overview
Problem
Surgical instruments, such as endoscopes, are prone to recontamination by harmful germs like Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, streptococci, Candida albicans, and Aspergillus fumigatus during prolonged storage in drying cabinets due to ambient air contamination and poor drying conditions.
Innovation Solution
A cabinet with a ventilation unit, cooling unit, and drying unit that supplies and cools drying gas to below 15°C, maintaining airtight conditions and circulating it through a closed loop to inhibit germ growth and enhance drying efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If surgical instruments are stored in a drying cabinet for prolonged periods, then storage capacity is improved, but recontamination risk increases
Solution Approach 1:
The patent changes the temperature parameter of the storage environment by introducing a cooling unit that maintains the drying cabinet interior at temperatures below 15°C, preferably below 10°C. This parameter change creates unfavorable conditions for germ proliferation while maintaining effective drying, thereby enabling prolonged storage without recontamination risk.
Solution Approach 2:
The patent creates a controlled atmospheric environment inside the drying cabinet by using a cooling unit to maintain low temperatures and a ventilation unit to circulate dried gas. This controlled atmosphere inhibits germ growth and prevents recontamination during prolonged storage periods.
2Object-affected harmful factors
If the drying cabinet is made airtight to prevent contamination, then protection against external germs is improved, but energy consumption increases
Solution Approach 1:
The patent implements continuous circulation of dried gas through the ventilation unit that constantly refreshes the air inside the airtight cabinet. This continuous action maintains the protective atmosphere without requiring excessive energy, as the system efficiently recycles and reuses the same gas stream rather than constantly introducing fresh air.
Solution Approach 2:
The ventilation unit continuously monitors and circulates the gas inside the cabinet, creating a feedback loop where the dried gas is constantly renewed. This feedback mechanism maintains the airtight seal's effectiveness while optimizing energy usage by avoiding constant external air intake.
3Object-affected harmful factors
If the cooling unit operates to reduce temperature below 15°C, then germ inhibition is improved, but energy consumption increases
Solution Approach 1:
The cooling unit is designed to operate passively or with minimal energy input, utilizing the natural cooling effect of the drying gas as it circulates through the cabinet. The system leverages the existing temperature differential and gas circulation to maintain sub-15°C conditions without requiring intensive active cooling, thereby reducing energy consumption while maintaining germ inhibition.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly reduces recontamination risk by creating unfavorable germ conditions and ensuring thorough drying, thereby protecting surgical instruments during storage.
Implementation Method 1
the cooling unit is configured to cool down the drying gas before it enters the interior space to a temperature below 15° C.
Implementation Method 2
the drying unit is configured to reduce the humidity of the drying gas
Implementation Method 3
The interior space can be thermally insulated and airtight against the exterior of the cabinet
Implementation Method 4
The interior space can be thermally insulated and airtight against the exterior of the cabinet
Data Source
AI summary
A cabinet for storing surgical instruments the cabinet including: a casing, wherein the casing encloses an interior space with at least one mounting device configured to hold a surgical instrument; a ventilation unit configured to supply drying gas to the interior space; and a cooling unit and a drying unit connected to the ventilation unit, wherein the drying unit is configured to reduce the humidity of the drying gas, and the cooling unit is configured to cool down the drying gas before it enters the interior space to a temperature below 15° C.